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alistair23-linux
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silence nfscache allocation warnings with kvzalloc 

silence nfscache allocation warnings with kvzalloc

Currently nfsd_reply_cache_init attempts hash table allocation through
kmalloc, and manually falls back to vzalloc if that fails. This makes
the code a little larger than needed, and creates a significant amount
of serial console spam if you have enough systems.

Switching to kvzalloc gets rid of the allocation warnings, and makes
the code a little cleaner too as a side effect.

Freeing of nn->drc_hashtbl is already done using kvfree currently.

Signed-off-by: Rik van Riel <riel@surriel.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
zero-sugar-mainline-defconfig
Rik van Riel 2020-09-14 13:07:19 -04:00 committed by J. Bruce Fields
parent 44b49aa65f
commit 8c38b705b4
1 changed files with 4 additions and 8 deletions
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12
fs/nfsd/nfscache.c
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@ -172,14 +172,10 @@ int nfsd_reply_cache_init(struct nfsd_net *nn)
if (status)
goto out_nomem;
nn->drc_hashtbl = kcalloc(hashsize,
sizeof(*nn->drc_hashtbl), GFP_KERNEL);
if (!nn->drc_hashtbl) {
nn->drc_hashtbl = vzalloc(array_size(hashsize,
sizeof(*nn->drc_hashtbl)));
if (!nn->drc_hashtbl)
goto out_shrinker;
}
nn->drc_hashtbl = kvzalloc(array_size(hashsize,
sizeof(*nn->drc_hashtbl)), GFP_KERNEL);
if (!nn->drc_hashtbl)
goto out_shrinker;
for (i = 0; i < hashsize; i++) {
INIT_LIST_HEAD(&nn->drc_hashtbl[i].lru_head);